本文選題：供水管網(wǎng) + 更新改造��； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：管網(wǎng)的更新優(yōu)化改造設(shè)計(jì)是一項(xiàng)復(fù)雜而龐大的工程,因此,科學(xué)合理的對(duì)管網(wǎng)現(xiàn)狀進(jìn)行綜合性能評(píng)價(jià),對(duì)于待更新改造管段進(jìn)行選擇與排序,并在此基礎(chǔ)上建立供水管網(wǎng)的更新改造優(yōu)化模型具有重要意義。本文采用專家評(píng)分法、模糊層次分析法、最優(yōu)化理論及粒子群算法等,對(duì)管網(wǎng)性能評(píng)價(jià)指標(biāo)進(jìn)行了篩選、提出了評(píng)價(jià)指標(biāo)體系;在此基礎(chǔ)上研究建立了管網(wǎng)更新改造優(yōu)化模型,確定了模型的解法,并通過(guò)實(shí)例進(jìn)行驗(yàn)證,效果良好。本文主要結(jié)論如下:首先,確定一套以水力可靠性、水質(zhì)安全性、結(jié)構(gòu)穩(wěn)定性和經(jīng)濟(jì)性為基礎(chǔ)的供水管網(wǎng)綜合性能評(píng)價(jià)體系,并采用模糊層次分析法確定了各項(xiàng)指標(biāo)的權(quán)重。其中水力可靠性分別從管網(wǎng)各節(jié)點(diǎn)的自由度、水量和水壓三個(gè)方面進(jìn)行評(píng)價(jià);水質(zhì)安全性主要從余氯和水齡兩方面對(duì)管網(wǎng)的水質(zhì)情況進(jìn)行評(píng)價(jià);結(jié)構(gòu)穩(wěn)定性從各管段的管材、管齡、襯層情況和荷載情況進(jìn)行評(píng)價(jià);對(duì)管網(wǎng)的經(jīng)濟(jì)性評(píng)價(jià),采用價(jià)值工程法計(jì)算管網(wǎng)單位供水量的成本進(jìn)行評(píng)價(jià)。其次,基于管網(wǎng)綜合性能評(píng)價(jià)體系,確立管段綜合性能評(píng)價(jià)方法,并依據(jù)該方法對(duì)待優(yōu)化管段進(jìn)行選擇與排序。利用EPANET建立的管網(wǎng)水力模型,對(duì)管網(wǎng)中各管段的性能進(jìn)行評(píng)價(jià)與排序。在管網(wǎng)更新改造費(fèi)用一定的條件下,對(duì)管網(wǎng)更新改造管段進(jìn)行選擇。再次,建立了一套以管網(wǎng)綜合性能最優(yōu)為目標(biāo)的供水管網(wǎng)更新改造優(yōu)化模型。該模型在管網(wǎng)更新改造費(fèi)用一定的條件下,對(duì)已選管段進(jìn)行優(yōu)化改造設(shè)計(jì),確定更新改造管段的管徑組合,實(shí)現(xiàn)管網(wǎng)綜合性能的最優(yōu)。為了實(shí)現(xiàn)管網(wǎng)綜合性能最優(yōu),通過(guò)使用粒子群算法(Particle Swarm Optimization,PSO)來(lái)實(shí)現(xiàn)。并且使用MATLAB編寫的EPANET-toolbox,將管網(wǎng)計(jì)算和優(yōu)化算法進(jìn)行有機(jī)結(jié)合。最后,以華北地區(qū)某城市開發(fā)區(qū)管網(wǎng)做為研究對(duì)象,對(duì)管網(wǎng)現(xiàn)狀進(jìn)行綜合性能評(píng)價(jià),選擇并確定了更新改造優(yōu)化管段集合,運(yùn)用供水管網(wǎng)更新改造優(yōu)化模型進(jìn)行計(jì)算求解。
[Abstract]:The renewal and optimization design of the pipeline network is a complex and huge project. Therefore, the comprehensive performance evaluation of the current situation of the pipeline network is carried out scientifically and reasonably, and the pipeline section to be renovated is selected and sorted. On the basis of this, it is of great significance to establish the optimal model of water supply network renewal and transformation. In this paper, the expert scoring method, fuzzy analytic hierarchy process, optimization theory and particle swarm optimization algorithm are used to screen the evaluation index of pipe network performance, and the evaluation index system is put forward. The solution of the model is determined and verified by an example, and the result is good. The main conclusions of this paper are as follows: firstly, a comprehensive performance evaluation system of water supply network based on hydraulic reliability, water quality safety, structural stability and economy is established, and the weight of each index is determined by fuzzy analytic hierarchy process (FAHP). The hydraulic reliability is evaluated from three aspects: the degree of freedom of each node of the pipe network, the quantity of water and the water pressure; the safety of water quality is mainly evaluated from the two aspects of residual chlorine and water age; the structural stability is from the pipe material of each section of the pipe, The value engineering method is used to evaluate the cost of water supply per unit of pipe network. Secondly, based on the comprehensive performance evaluation system of pipe network, the comprehensive performance evaluation method of pipe segment is established, and the optimal pipe segment is selected and sorted according to this method. Based on the hydraulic model of pipe network established by EPANET, the performance of each section of pipe network is evaluated and sorted. Under the condition of the fixed cost of the network renewal and transformation, the pipe section of the network renewal and transformation is selected. Thirdly, an optimization model of water supply network renewal and transformation is established, which aims at the optimal comprehensive performance of water supply network. Under the condition of the fixed cost of the renewal and transformation of the pipeline network, the model optimizes the design of the selected pipe segment, determines the pipe diameter combination of the renewal section, and realizes the optimal comprehensive performance of the pipe network. In order to achieve the optimal comprehensive performance of the pipe network, particle swarm optimization algorithm (PSO) is used. Using EPANET-toolbox written by MATLAB, the pipe network calculation and optimization algorithm are combined organically. Finally, taking the pipeline network of a city development zone in North China as the research object, the comprehensive performance evaluation of the present situation of the pipeline network is carried out, and the optimal section set of the renewal and transformation is selected and determined, and the optimization model of the renewal and transformation of the water supply network is used to calculate and solve the problem.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU991.33

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